Influence of exercise intensity on time spent at high percentage of maximal oxygen uptake during an intermittent session in young endurance-trained athletes

Thevenet, Delphine; Tardieu, Magaly; Zouhal, Hassane; Jacob, Christophe; Abderrahman, Ben Abderraouf; Prioux, Jacques

doi:10.1007/s00421-007-0540-6

Cited by 45 publications

(38 citation statements)

References 39 publications

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“…They found a longer time to exhaustion when recovery was passive (745 § 171 vs. 445 § 79 s, p < 0.001). Thevenet et al (2007) reported similar results following a HIIE session involving intermittent runs of 30 s at 105% of MAS interspersed with 30 s of either active (50% MAS) or passive (0% MAS) recovery (2,145 § 829 vs. 1,072 § 388 s, p < 0.01). Our results are therefore in agreement with the existing literature on healthy subjects.…”

Section: Discussionmentioning

confidence: 55%

“…First, the acute cardiopulmonary responses of these protocols were not studied prior to their implementation into training programs. In healthy subjects, manipulating exercise/recovery intensity has been shown to alter time to exhaustion and time spent at a high percentage of VO 2 independently of bout duration (Billat 2001;Dupont et al 2003a;Thevenet et al 2007). In the absence of this speciWc information, it is diYcult to determine whether the HIT protocols used by Rognmo et al (2004), Warburton et al (2005), andWisloV et al (2007) induced a cardiovascular response that was optimal for improving VO 2max .…”

Section: Introductionmentioning

confidence: 99%

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Optimization of high intensity interval exercise in coronary heart disease

et al. 2009

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High intensity interval training has been shown to be more effective than moderate intensity continuous training for improving maximal oxygen uptake (VO(2max)) in patients with coronary heart disease (CHD). However, no evidence supports the prescription of one specific protocol of high intensity interval exercise (HIIE) in this population. The purpose of this study was to compare the acute cardiopulmonary responses with four different single bouts of HIIE in order to identify the most optimal one in CHD patients. Nineteen stable CHD patients (17 males, 2 females, 65 +/- 8 years) performed four different bouts of HIIE, all with exercise phases at 100% of maximal aerobic power (MAP), but which varied in interval duration (15 s for mode A and B and 60 s for mode C and D) and type of recovery (0% of MAP for modes A and C and 50% of MAP for modes B and D). A passive recovery phase resulted in a longer time to exhaustion compared to an active recovery phase, irrespective of the duration of the exercise and recovery periods (15 or 60 s, p < 0.05). Time to exhaustion also tended to be higher with mode A relative to mode C (p = 0.06). Despite differences in time to exhaustion between modes, time spent at a high percentage of VO(2max) was similar between HIIE modes except for less time spent above 90 and 95% of VO(2max) for mode C when compared with modes B and D. When considering perceived exertion, patient comfort and time spent above 80% of VO(2max), mode A appeared to be the optimal HIIE session for these coronary patients.

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Section: Discussionmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Optimization of high intensity interval exercise in coronary heart disease

et al. 2009

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“…Nossos resultados demonstraram um efeito da intensidade no Tlim (ver tabela 1), corroborando com outros estudos, que também encontraram um maior tempo de exercício e quantidade de séries executadas quando a intensidade era relativamente menor (DUPONT et al, 2002;THEVENET et al, 2007). Esta resposta poderia ser explicada pela menor contribuição do sistema anaeróbio na ressíntese do ATP (ROZENEK et al, 2007), o que provavelmente diminuiria a produção e acúmulo de metabólitos responsáveis pela instalação da fadiga e conseqüente interrupção do exercício (ver tabela 1).…”

Section: Sujeitosunclassified

“…Contudo, a razão esforço:recuperação de 2:1 apresentou melhores resultados para t95VO 2 max do que exercícios com razão esforço:pausa de 1:1 . Assim, a utilização de 30s de esforço intercalados por 15s de recuperação, pode ser um ótimo estímulo para aumentar o tempo mantido em altos percentuais do VO 2 max, visto que, 30s de esforço é suficiente para o VO 2 alcançar o seu valor máximo após algumas séries de exercício (THEVENET et al, 2007). Além disso, um menor tempo de recuperação (15s) permite manter o VO 2 ainda elevado ao final da recuperação, fazendo com que o tempo para alcançar novamente o VO 2 max seja reduzido durante a série subseqüente (DUPONT et al, 2002).…”

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Efeito da intensidade do exercício de corrida intermitente 30s:15s no tempo de manutenção no ou próximo do VO2max

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Schlickmann

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et al. 2013

Motriz: rev. educ. fis.

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IntroduçãoO consumo máximo de oxigênio (VO 2 max) é definido como a maior quantidade de oxigênio que pode ser captada do ar ambiente, transportada e utilizada pelas células durante a atividade física (HILL e LUPTON, 1923;HAWKINS et al., 2007). Dentre as características fisiológicas encontradas em atletas, o VO 2 max é um dos mais relevantes para determinar a eficiência do sistema cardiorrespiratório, e um importante indicador do desempenho para atletas de provas com alta demanda do sistema aeróbio, como as corridas de fundo e meio fundo no atletismo (BRANDON, 1995; MIDGLEY, MCNAUGHTON e WILKINSON, 2006; MIDGLEY, MCNAUGHTON e JONES, 2007 Motriz, Rio Claro, v.19 n.1, p.207-216, jan./mar. 2013 Effect of intensity of intermittent running exercise 30s:15s at the time maintenance at or near VO 2 maxAbstract: The present study compared the time maintained above 90% (t90VO 2 max) or 95% VO 2 max (t95VO 2 max) in three different exercise intensities. After performing an incremental test to determine VO 2 max, eight physical education active students (23 ± 3 years) performed three intermittent exercise sessions (100, 110 e 120% velocity of VO 2 max (vVO 2 max)) with ratio effort:recovery of 30s:15s. The t95%VO 2 max was significantly higher at 110%vVO 2 max (EI 110% ) (218.1 ± 81.6s) compared to 100% vVO 2 max (EI 100% ) (91.9 ± 75.2s) and 120%vVO 2 max (EI 120% ) (126.3 ± 29.4s), but without differences between EI 100% and EI 120% . The t90%vVO 2 max was significantly different only between EI 110% and 120%. Therefore, we conclude that during intermittent exercise with ratio 30s:15s, the intensity of 110%vVO 2 max appears more appropriate to maintain VO 2 max for a longer time.

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“…The prescription of HIIT is almost infinitely variable due to the many possible combinations of exercise mode, exercise intensity, duration and number of intervals performed, and the durations and nature of the recovery periods between exercise bouts [245] . However, the common characteristics of HIIT are: (1) it involves repeated short-to-long bouts of rather high-intensity exercise interspersed with recovery periods [27] ; (2) the intensity is between 80-100% peak heart rate [26] (compared to ≥ 100% V O2max, which is classified as 'sprint-interval training' [26] ); and (3) the intensity of the relief intervals are characterised in alignment with the intensity of the work intervals, that is, higher intensity relief intervals are prescribed for lower intensity work intervals [246] and lower intensity relief intervals are prescribed for work intervals of higher intensities and durations [247][248][249] . The aim of this section is to 123 review the physiological and performance adaptations to HIIT in endurance-trained athletes.…”

Section: High-intensity Interval Training (Hiit) In Trained Endurancementioning

confidence: 99%

Sex differences and training adaptations in relation to the lactate threshold and endurance exercise performance

Fisher¹

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The second lactate threshold (LT2) has long been associated with endurance performance in trained endurance athletes. In Australia, the state institutes and academies of sport utilise the modified maximum deviation (D-max) method to determine LT2 in endurance athletes for the purpose of establishing training intensities and indicating whether athletes are appropriately adapting to training loads. For LT2 methods to be considered valid, it had been suggested that strong associations with simulated endurance performance and the maximal lactate steady-state (MLSS) are required. Although research has established a strong relationship between the modified D-max and endurance performance, there are gaps in the literature which this thesis aims to investigate. iii appropriate measurement of ovarian hormones. Therefore, the second study extended study one, to explore the same experimental aims, in endurance-trained women (n = 12) whilst controlling for ovarian hormone concentrations through the use of hormonal contraceptives. When comparing to the men's results from study one, power output and V O2 at LT2 were also found to be significantly correlated with 40 km cycling performance in endurance-trained women. Additionally, combining maximal (peak power output and V O2max) and fractional utilisation (V O2 and power output at LT2) variables produced the strongest prediction of performance in women (r 2 = 0.87) and men (r 2 = 0.95). In women, VT2 was significantly higher than LT2 for all variables measured, despite no differences observed for the men. More women (73%) than men (50%) completed 30 min of cycling and elicited a steady-state [La -] at their LT2 power output, despite LT2 being significantly higher than the self-selected power output during a 40 km cycling time trial in women.The final study examined the sensitivity of the modified D-max LT2 to adapt to a brief highintensity interval training (HIIT) intervention in already-endurance trained men (n = 9) and women (n = 8). Although not significant, women (but not men) showed a trend towards LT2 power output improvement (2.2%; p = 0.08) post-HIIT. Mean 40 km time trial performance significantly improved in both men (-1.7%) and women (-2.6%), with no difference in the magnitude of change between sexes. Furthermore, although LT2 power output explained 77% of the improvement in 40 km cycling performance in women, none of the measured variables explained the performance improvement in men, suggesting that mechanisms other than those responsible for the LT2 were involved. The LT2-performance relationship was intensity-dependent in both men and women, shown by significant correlations at post-HIIT but not baseline. Some of the sex-related differences may, at least in part, be explained by the influence of oestradiol, perhaps by the exacerbation of the sex-based differences in substrate metabolism and subsequent effects on [La -] and fatigue, and/or greater cardiovascular stress in men than women.Collectively, these studies improve understanding of the modifie...

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Influence of exercise intensity on time spent at high percentage of maximal oxygen uptake during an intermittent session in young endurance-trained athletes

Cited by 45 publications

References 39 publications

Optimization of high intensity interval exercise in coronary heart disease

Optimization of high intensity interval exercise in coronary heart disease

Efeito da intensidade do exercício de corrida intermitente 30s:15s no tempo de manutenção no ou próximo do VO2max

Sex differences and training adaptations in relation to the lactate threshold and endurance exercise performance

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